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#ifndef _DRM_DRIVER_H_
#define _DRM_DRIVER_H_
#include "pipe/p_compiler.h"
struct pipe_screen;
struct pipe_context;
struct pipe_resource;
#define DRM_API_HANDLE_TYPE_SHARED 0
#define DRM_API_HANDLE_TYPE_KMS 1
#define DRM_API_HANDLE_TYPE_FD 2
/**
* For use with pipe_screen::{texture_from_handle|texture_get_handle}.
*/
struct winsys_handle
{
/**
* Input for texture_from_handle, valid values are
* DRM_API_HANDLE_TYPE_SHARED or DRM_API_HANDLE_TYPE_FD.
* Input to texture_get_handle,
* to select handle for kms, flink, or prime.
*/
unsigned type;
/**
* Input for texture_get_handle, allows to export the offset
* of a specific layer of an array texture.
*/
unsigned layer;
/**
* Input to texture_from_handle.
* Output for texture_get_handle.
*/
unsigned handle;
/**
* Input to texture_from_handle.
* Output for texture_get_handle.
*/
unsigned stride;
/**
* Input to texture_from_handle.
* Output for texture_get_handle.
*/
unsigned offset;
};
/**
* Configuration queries.
*/
enum drm_conf {
/* How many frames to allow before throttling. Or -1 to indicate any number */
DRM_CONF_THROTTLE, /* DRM_CONF_INT. */
/* Can this driver, running on this kernel, import and export dma-buf fds? */
DRM_CONF_SHARE_FD, /* DRM_CONF_BOOL. */
DRM_CONF_MAX
};
/**
* Type of configuration answer
*/
enum drm_conf_type {
DRM_CONF_INT,
DRM_CONF_BOOL,
DRM_CONF_FLOAT,
DRM_CONF_POINTER
};
/**
* Return value from the configuration function.
*/
struct drm_conf_ret {
enum drm_conf_type type;
union {
int val_int;
bool val_bool;
float val_float;
void *val_pointer;
} val;
};
struct drm_driver_descriptor
{
/**
* Identifying prefix/suffix of the binary, used by the pipe-loader.
*/
const char *driver_name;
/**
* Create a pipe srcreen.
*
* This function does any wrapping of the screen.
* For example wrapping trace or rbug debugging drivers around it.
*/
struct pipe_screen* (*create_screen)(int drm_fd);
/**
* Return a configuration value.
*
* If this function is NULL, or if it returns NULL
* the state tracker- or state
* tracker manager should provide a reasonable default value.
*/
const struct drm_conf_ret *(*configuration) (enum drm_conf conf);
};
extern const struct drm_driver_descriptor driver_descriptor;
/**
* Instantiate a drm_driver_descriptor struct.
*/
#define DRM_DRIVER_DESCRIPTOR(driver_name_str, func, conf) \
const struct drm_driver_descriptor driver_descriptor = { \
.driver_name = driver_name_str, \
.create_screen = func, \
.configuration = (conf), \
};
#endif
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